Is there a command I can put into a Windows XP .bat file to bring the command shell to the front?
nircmd will do this, though it involves a little scripting.
nircmd win activate "titleofwindow"
You basically need to know the title of the cmd window you are executing (you can set this via the TITLE command in windows)
thus:
TITLE %SOME_UNIQUE_VALE%
nircmd win activate %SOME_UNIQUE_VALE%
should do the trick.
Note some malware tools make use of the NirCmd executable (it requires no deployment as is very powerful) this may cause you problems.